In this article you can learn how to setup your email account on your iPhone
To setup the email:
1. On your homepage look for Settings
2. Scroll to Passwords & Accounts.
3. Click on Add Account
4. From the accounts types choose Other.
5. Click on Add Mail Account
6. Enter your email details and click Next
7. Set the Host Name for the incoming and outgoing server to mail.enter-system.com and add your email account details
8. After submitting the details the iPhone will add your email to the accounts list